Spinning-roll.



E. KEMPSHALL.

SPINNING- ROLL.

APPLIOATION I'ILED JAN. 29, 1913.

Patented Sept. 30, 1913.

CDLUMEH) PLANOORAPH CouWASHlNOTObh D. c

unir srr S PATNT GFMQE ELEAZER KEMPSHALL, OF NEW YORK, N. Y., ASSIGNORTO KEMPSHALL SUPPLY COMPANY, A CORPORATION OF NEW J ERSEY.

SPINNING-ROLL.

Specification of Letters Patent.

Patented Sept. 30, 1913.

To all 10720772, it may concern:

Be it known that- I, ELEAZER KEMrsHALL, a citizen of the United' States,residing at New York, in the county of New York and State of 'New York,have invented certain new and useful Improvements in Spinning- Rolls;and I do hereby declare the following to be a full, Clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to letters or figures of referencemarked thereon, which form a -part of this specification.

This invention relates to rolls for Spinning machines.

The object of the invention is to provide a slow yielding mass ofmaterial, and an interposed binder of material having a less tendenoy torebound or yield than either the outer coating of pyroxylin, or theinner material forming the base.

My invention therefore is primarily directed to a roll constructed ofsuch material as will slowly yield eftectually to avoid breaking ordisplacing the thread When passng between a pair of rolls.

n the drawings: Figure 1 is an elevation of a pair of rolls, one of thelatter being broken away to illustrate the invention. Fig. 2 is anenlarged detail-cross section of one of my improved rolls.

l indioates a shaft, 2 a metal core on the shaft. Around the metal coreis a base of slow yielding material 3, felt being preferably employed.The base of felt is of substantial thickness, and is in asemi-compressed condition to form a tight grip on the metal core. Tohold the base solid on the core, and at the same time add to the slowaction of the felt, I incase the latter with a thin binder of leather,indicated at 5. The leather s stretched tight around ,the felt andclamps the same on thecore, and prevents slipping which frequentlyoccurs When knots are formed in the thread.

The leather binder is coated with pyroXylin, indicated at 8, and Whenthe latter is applied it takes into, or packs into the interstices or"the leather, and forme a tight grip. The materials, base, and coatingform a homogeneous body of yielding material, which will slowly. reboundto its normal position after the thread passes from between the roll.

In a companion application, executed of even date, I have described andclaimed a base of felt, but for a certain class of thread I find itexpedient to provide a mass which will respond even slower than a bodyof fabric. F urthermore, When the pressure between the rolls is verygreat, it is essential that an effective binder between the pyroxylinand felt be provided. I find that this binder must be of such materialas will slowly yeld, and must be capable of taking the pyroxylin in itsouter sur-face, and at the same time it must possess the necessarystrength. Leather has all of these essentials, so that. in addition to abinder, the leather acts with the feltas an etfective means to make themass slowly 'yield without a rebound.

Having described my invention, What I claim is:

1. A roll comprising a core, a layer of thick' fabrlc on the core, a.bmder of leather on the fabric, and a coating of pyroXylin on theleather.

2. A roll comprising a core, of felt on the core, a binder of leatheraround the felt and a coating of pyroxylin around the leather, thepyroxylin being embedded in the interst-ices of the leather.

In testimony whereof I have signed my name to this specification in thepresence of two subsoribing witnesses.

ELEAZER KEMPSHALL.

VVitnesses EMILY F. CAMP, J NO. Inman.

a thck layer Gopies of this patent may be obtained for five cents each,by addressing the Commissioner of Patents, Washington, D. 0.

